Re: Negative Resistance

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "robert & june heidlebaugh by way of Terry Fritz <teslalist-at-qwest-dot-net>" <rheidlebaugh-at-desertgate-dot-com>

Your obsorvation is correct, but the resolution is way off. In a negative
resistance anplifier the driving signal must be a negative resistance or at
least neutral current change. The spark gap system is such a large current
enviorment it would be very hard to test. Keep in mind the arc current is in
hundreds of amps and the secondary current is in less than an amp so the
losses are high enough to mask the negative resistance effect you are
testing for.
     Robert  H
-- 


 > From: "Tesla list" <tesla-at-pupman-dot-com>
 > Date: Mon, 06 Jan 2003 07:30:15 -0700
 > To: tesla-at-pupman-dot-com
 > Subject: Negative Resistance
 > Resent-From: tesla-at-pupman-dot-com
 > Resent-Date: Tue, 7 Jan 2003 12:54:23 -0700
 >
 > Original poster: "Jolyon Vater Cox by way of Terry Fritz
 > <teslalist-at-qwest-dot-net>" <jolyon-at-vatercox.freeserve.co.uk>
 >
 > I am wondering how a spark gap compares to a lambda diode.
 > Both are "negative resistance" devices;
 > with spark gap
 > increase in current coincides with decrease in voltage.
 >
 >
 > It is also possible to have an increase in voltage coincides with decrease
 > in current-
 > is this also negative resistance? Is this not what happens with the lambda
 > diode and also with the tunnel diode? Is this behavior the same or
 > different to the spark gap?
 >
 > Would it be possible to build a "power" lambda diode to function as a
 > negative resistance device in a real Tesla coil?
 >
 > Jolyon
 >
 >
 >